Re: temp gauge

It just makes scientific sense that the crush washer will not retain as consistent temps as not using it so I'm gonna continue not using it as preferred my the manufacturer. After all it's aluminum and hollow, much like cylinder fins that are designed to dissipate heat.

Re: temp gauge

yeah i agree with ken on 96-97% of everything, maybe not so much about his choices in cats-dressed-as-disney-character porn, but almost everything mopeds. I agree that if you want to use it permanently installed as a safety measure, removing the gasket is the 'correct' way to do it, but running it with the gasket on doesn't make it more/less 'accurate' because it doesn't mean anything objective to begin with.

i just had to vent because i get sick of people on here taking the CHT as the word of god.... like 'the oracle says 400, sacrifice a virgin and do a rain dance or something'

the dangerous part is that people see a certain arbitrary temp and assume they are safe. like, it should have a warning label that says 'a reading of 340 degrees is not a substitute for a properly tuned bike'

yeah, i'll quit ranting now...

Re: temp gauge

If I were cool, I would run an EGT and CHT simultaneously so I knew what the CHT corresponded to since EGT is more relevant.

Seems like any heavily instrumented 2t thing I see has EGT instead of CHT on each cylinder.

Re: temp gauge

I know a temp gauge is not the answer but it sure brings a lot of dark questions into the light, especially for dummys. For example; If your top temp reads 280 chances are you're running super rich. If you're reading 450 or better it's a sign that you have an air leak and/or are under jetted. To the average mopedist a proper plug chop is much more complicated and less assuring than reading a temp in realtime.

Temp gauge or not, you still have to tune. It's not a substitute to tuning but rather an informative aid telling you that something's wrong (or that it's right for that matter).

I think a temp gauge is the best 40 bucks spent on any tuned build.

Re: temp gauge

lol, good rant Graham. I finally started messing around with mine this season (got it a while ago when it seemed like everybody started using them and talking about tuning by temp). Seems like i can jet waay low and keep it under 400 on the vespa engine with Si head, def not going by that lol.

Only seized one time going down hill on my puch, turned out i'd put a hole in the shitty rubber bing filter coupler when i was putting it on. I usually run my stuff on the rich side though.

Re: temp gauge

So as graham can attest , the one bad idea (not mentioned) is to take off the crush washer from the plug insert the trailtech dealie and then put the crush washer back on. You can't get a fell for whether the sparkplug is correctly following the threads on the head. I've ruined three heads of late by such cross threading. I know trailtech says to substitute their sensor for the crush washer but after a while the trail tech deal gerpts warped and twisted from pulling and looking at the plug. I dare melted out the trailtech ring a tiny amount and put it on the threads with the crush washer never removed. It hand starts nicely.

Levi Harris ' red moby has a gigantic temp sensor and tach unit that with the 14 mm sparkplug ring is over $200. It's the bomb. It's illuminated at night. Unless I am wrong the trailtech isn't illuminated so when night riding and testing (yea I have a day job) it's kinda useless.

Re: temp gauge

http://www.ebay.com/itm/New-Digital-Cooking-Food-Probe-Meat-Kitchen-BBQ-Selectable-Thermometer-USA-/370955959414?pt=LH_DefaultDomain_0&hash=item565eb2bc76

You can use this sensor on your TT when you break it.

Or just get one of these and extend the wires. I ran both that and a TT at the same time. Same readings but this updates way faster.

Re: temp gauge

As in hold it to the head? It's a spear! Please elaborate.

While we are at it. Can't we just drill and tap some little hole into the aluminum of the head and screw in a thermocouple. That's how my expresso machine was modded. Anybody do this and can post some links.

Re: temp gauge

There is a sensor and two wires in the 'spear'. Take em out connect em to your trail tech and BAM it works again.

I usually drill out the broken TT and epoxy this sensor in there.

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^That is hilarious. I may do this. The meat thermometer is probably more robust than the TT lol.

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The interface is certainly better...

Re: temp gauge

matt boda1nz /

Gotta light it up...

(edited)

tmp_140201960526401453262534.jpg

Re: temp gauge

Damm sweeeet yea wow

Re: temp gauge

matt boda1nz /

Thanks..

It's a voltage regulator chip tapped into the battery line that comes up and feeds the turn signals and horn. The light housing is a Bic pen and the arm holding it is thick gauge wire. It's an amber led to match the amber speedo. Perfect for the night time cruising.

Re: temp gauge

Hell yes... so clean and useful. These are my favorite things...

Re: temp gauge

Brent Bublitz /

Somewhat related question, trying to get a TT on my AV7. I can't figure out any way to squeeze the sensor in there. The boot on the copper ring hits various fins or the decomp in any position I can see. Anyone else have that problem?

Re: temp gauge

scott middleton /

yep. i got mine to sit between the the center two fins on the rear of the head. took some persuading. would like a better fit, but i can't see how else do it. the stock boot JUST fits over the plug when I slightly bend the sensor away from the plug. getting a new NGK boot that sits higher on the plug.

https://www.treatland.tv/NGK-black-spark-plug-boot-long-version-LB05FP-p/ngk-spark-plug-boot-lb05fp.htm (edited)

Re: temp gauge

They fit very awkward and tight on those stock av7 heads, but they do fit, normally angled diagonally.

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